<template>
  <div class="sidebar">
    <el-menu
        class="sidebar-el-menu"
        :default-active="onRoutes"
        :collapse="collapse"
        background-color="#324157"
        text-color="#bfcbd9"
        active-text-color="#20a0ff"
        unique-opened
        router
    >
      <template v-for="item in items">
        <template v-if="item.subs">
          <el-submenu :index="item.index" :key="item.index">
            <template slot="title">
              <i :class="item.icon"></i>
              <span slot="title">{{ item.title }}</span>
            </template>
            <template v-for="subItem in item.subs">
              <el-submenu
                  v-if="subItem.subs"
                  :index="subItem.index"
                  :key="subItem.index"
              >
                <template slot="title">{{ subItem.title }}</template>
                <el-menu-item
                    v-for="(threeItem,i) in subItem.subs"
                    :key="i"
                    :index="threeItem.index"
                >{{ threeItem.title }}
                </el-menu-item>
              </el-submenu>
              <el-menu-item
                  v-else
                  :index="subItem.index"
                  :key="subItem.index"
              >{{ subItem.title }}
              </el-menu-item>
            </template>
          </el-submenu>
        </template>
        <template v-else>
          <el-menu-item :index="item.index" :key="item.index">
            <i :class="item.icon"></i>
            <span slot="title">{{ item.title }}</span>
          </el-menu-item>
        </template>
      </template>
    </el-menu>
  </div>
</template>

<script>
import bus from '../common/bus';

export default {
    data() {
        return {
            collapse: false,
            items: [
                {
                    icon: 'el-icon-lx-home',
                    index: 'dashboard',
                    title: '系统首页'
                },
              {
                icon: 'el-icon-lx-people',
                index: 'monitoringMap',
                title: '实时监控',
                subs: [
                  {
                    index: 'map',
                    title: '地图分布'
                  },
                ]
              },
                {
                  icon: 'el-icon-lx-people',
                  index: 'Employee',
                  title: '员工管理',
                  subs: [
                    {
                      index: 'EmployeeInformation.vue',
                      title: '员工信息'
                    },
                  ]
                },
                {
                  icon: 'el-icon-lx-calendar',
                  index: '5',
                  title: '客户管理',
                  subs: [
                    {
                      index: 'clientInformation',
                      title: '客户信息'
                    },
                    {
                      index: 'clientAnalyse',
                      title: '客户信息分析'
                    },
                    {
                      index: '3-2',
                      title: '三级菜单',
                      subs: [
                        {
                          index: 'markdown',
                          title: 'markdown编辑器'
                        }
                      ]
                    },
                  ]
                },
                //订单管理
                {
                    icon: 'el-icon-notebook-2',
                    index: 'order',
                    title: '订单管理',
                    subs: [
                        {
                            index: 'allOrderInquire',
                            title: '订单查询'
                        },
                        {
                            index: 'orderAnalyse',
                            title: '订单分析'
                        }
                    ]
                },
                {
                    icon: 'el-icon-lx-copy',
                    index: 'tabs',
                    title: 'tab选项卡'
                },
                {
                    icon: 'el-icon-lx-calendar',
                    index: '3',
                    title: '表单相关',
                    subs: [
                        {
                            index: 'form',
                            title: '基本表单'
                        },
                        {
                            index: '3-2',
                            title: '三级菜单',
                            subs: [
                                {
                                    index: 'editor',
                                    title: '富文本编辑器'
                                },
                                {
                                    index: 'markdown',
                                    title: 'markdown编辑器'
                                }
                            ]
                        },
                        {
                            index: 'upload',
                            title: '文件上传'
                        }
                    ]
                },
                {
                  index: 'editor',
                  title: '富文本编辑器'
                },
                {
                  index: 'markdown',
                  title: 'markdown编辑器'
                }
              ]
        }
    },

  computed: {
    onRoutes() {
      return this.$route.path.replace('/', '');
    }
  },
  created() {
    // 通过 Event Bus 进行组件间通信，来折叠侧边栏
    bus.$on('collapse', msg => {
      this.collapse = msg;
      bus.$emit('collapse-content', msg);
    });
  }
};
</script>

<style scoped>
.sidebar {
  display: block;
  position: absolute;
  left: 0;
  top: 70px;
  bottom: 0;
  overflow-y: scroll;
}

.sidebar::-webkit-scrollbar {
  width: 0;
}

.sidebar-el-menu:not(.el-menu--collapse) {
  width: 250px;
}

.sidebar > ul {
  height: 100%;
}
</style>
